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2019-2020年高三11月周考英语试题 缺答案

2019-2020年高三11月周考英语试题 缺答案
2019-2020年高三11月周考英语试题 缺答案




Ⅱ. Grammar and vocabulary(20%)

Section A

Directions: After reading the passages below, fill in the blanks to make the passages coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

In most industrialized countries about 105 boys are born for every 100 girls, for a ratio of 1.05, known as the secondary sex ratio, or SSR; the primary sex ratio is the ratio at conception. This is often expressed as the percentage of boys among all births, or about 51.2 percent. The percentage of males among all births is not fixed, however. Since the 1950s and 1960s the overall SSR 25 (decline) in the U.S., Canada and several European countries, there are also both personal and environmental factors that affect the average sex ratio.

26 chance of having a boy appears 27 (decline)with the mother's age, the father's age and the number of children the family already has. These effects are small. One study in Denmark found that the SSR of children born to fathers younger than 25 was 51.6 percent, which decreased 28 51.0 percent among children of fathers at least 40 years of age. Therefore it is unlikely that the declining SSR in many countries results solely from large-scale changes in such personal factors.

With regard to environmental factors, improved prenatal and obstetrical care during the first part of the 20th century is largely responsible for an 29 (increase) SSR over this period in many countries. The male fetus is more susceptible to loss in the womb than is the female fetus, so with more conceptions reaching term, proportionally more males are born.

It is difficult to discern how much of the decrease in sex ratio since the 1950s arises from contaminants in the environment. What is known is that drug use, high occupational exposures and environmental accidents 30 affect SSR. For example, hopeful mothers 31 (take) clomiphene citrate (Clomid) for infertility bore babies with an SSR of only 48.5 percent.

Workers producing 1,2-dibromo-3-chloropropane (DBCP), a chemical used to kill worms in agriculture, experienced even larger decreases in the number of male babies. Effects of DBCP on sperm quality 32 (discover) incidentally when male workers found that they were unable to father children. After the exposure ended, male workers experienced some recovery of sperm quality and 36 children were born to 44 workers. Of these 36 children only 10 were boys--an SSR of just 27.8 percent.

These dramatic changes resulting from extreme exposures raise the concern that chemicals in the environment at 33 (low) concentrations may also change the SSR by exposing people over longer periods of time. For example, there are reports that parental exposure to polychlorinated biphenyls (PCBs) and mercury, each of which is widely distributed in the environment, can affect the sex ratio. 34 (confirm) such effects will take careful work on large populations, but the results may be quite important.

Section B(8%)

Directions: plete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

Wandering around art galleries and museums will be a regular feature of school life, thanks to a curriculum reform package aimed at broadening young minds.

Teachers will soon be 35 students into venues where they will be exposed to the arts, said Shanghai vice mayor Weng Tiehui at a meeting with local political advisers yesterday.

“Shanghai has been 36 artistic education and requiring students to have at least one artistic skill before graduating from high school,” Weng said at the fourth session of the 12th Shanghai mittee of the Chinese Peop le’s Political Consultative Conference.

“We plan to 37 watching dramas or seeing exhibitions to curricula, such as Chinese, art and music courses. We will take students into artistic venues.”

“We hope that our children will enjoy visiting theate rs, galleries and museums after work to make their life more colorful when they grow up,” she added.

“Most theaters for 38 are empty on weekdays, which means our schools have

not made good use of them,” said Cai Jinping, a political adviser and director of the Children’s Theater of China Welfare Institute. ”Artistic education should not be 39 to music or art classes in schools,” Cai said.

“We have to bring children into professional venues to 40 the plete presentation of real and elegant arts in person.”

Wang Yang, principal of Caoyang No 2 High School, weled the plan, saying that Chinese students do not enjoy the same standard of arts 41 extracurricular activities that are taken for 42 in western countries.

“It’s impo rtant to cultivate artistic tastes in our children when they are young. Listening to a concert when being taught about a musician, or seeing an exhibition after learning about the artist, would be really helpful in understanding the arts,” he told Shanghai Daily.

“But most students focus on lessons at school and only some who are members of student artistic groups have the opportunity to visit artistic venues 43 .”

He said that some parents bring children to concerts or exhibitions on weekends, but not every family can afford it.

“Visits to galleries and theaters are cheaper when they are organized by schools,” Wang said, adding that the government could help to improve Shanghai’s cultural 44 by building new arts venues.

Reading prehension(45%)

Section A

Directions: For each blank in the following passage there are four words or phrases marked A,B,C and D. Fill in each blank with the word or phrase that best fits the context.

While on summer break in xx, Jack Andraka made a breakthrough in cancer detection that had eluded medical experts. The boy from Maryland was 15.

Using information he found on Google and Wikipedia, the boy 45 an idea for diagnostic test for pancreatic cancer(胰岛腺). The test, he says, is 168 times 46 , 400 times more sensitive and 26,000 times more economical than the medical 47 .

Currently, to screen the blood of a patient 48 for pancreatic cancer, doctors must send vials to a lab, where blood 49 are tested for increased levels of a biomarker.

C ancer researchers and doctors say that these tests, which are 60 years old, often don’t show any abnormalities even when the cancer is 50 .

Andraka’s test provides an answer on the spot in five minutes with what he estimates is close to 100 percent 51 . It involves dipping filter paper in a solution which detects a(n) 52 protein. 53 the blood contains the biomarker, it changes the paper’s electrical potential, which can be 54 with an ohmmeter.

The now 17-year-old first got the idea for the project at age 13 when a family friend “who was like an uncle” to him died from the disease, one of the deadliest types of cancer. The whiz kid, who became interested in science at an early age and spends much of his time in the lab, 55 help from scientists and began to carry out one experiment after another to eventually 56 .

Len Lichtenfeld, a medical expert at the American Cancer Society, 57 Andraka’s work as an “incredible acplishment.” In xx, Andraka was awarded the $75,000 grand prize in the Intel International Science and Engineering Fair for his work. Since then, he has bee a(n) 58 in scientific circles and has travelled around the world to give TED talks.

While the test isn’t available mercially yet, Andraka is working wi th several panies to continue to test and 59 the product in the hope that it can be sold over- the-counter in the future.

45.A.caught up with B. came up with C. looked forward to D. gave up on

46.A.clearer B. earlier C. faster D. slower

47.A.format B. frame C. level D. standard

48.A.at cost B. at risk C. in shadow D. in trouble

49.A.case B. example C. sample D. symbol

50.A.advanced B. awaited C. suffered D. sensed

51.A.accuracy B. clarity C. definition D. distinction

52.A.especial B. exact C. special D. specific

53.A.Although B. Because C. If D. When

54.A.calculated B. checked C. estimated D. measured

55.A.chased B. hunted C. searched D. sought

56.A.break through B. set out C. stand out D. take up

57.A.broasted B. emphasized C. overstated D. praised

58.A.celebrity B. expert C. pioneer D. superior

59.A.exploit B. evolve C. improve D. promote

Section B

Directions: Read the following three passages. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage you have just read.


The case for college has been accepted without question for more than a generation. All high school graduates ought to go, says conventional wisdom and statistical evidence, because college will help them earn more money, bee "better" people, and learn to be more responsible citizens than those who don't go.

But college has never been able to work its magic for everyone. And now that close to half our high school graduates are attending, those who don't fit the pattern are being more numerous, and more obvious. College graduates are selling shoes and driving taxis; college students interfere with each other's experiments and write false letters of remendation in the intense petition for admission to graduate school. Other find no stimulation in their studies, and drop out—often encouraged by college administrators.

Some observers say the fault is with the young people themselves—they are spoiled and they are expecting too much. But that is a condemnation of the students as a whole, and doesn't explain all campus unhappiness. Others blame the state of the world, and they are partly right. We have been told that young people have to go to college because our economy can't absorb an army of untrained eighteen-year-olds. But disappointed graduates are learning that it can no longer absorb an army of trained twenty-two-year-olds, either.

Some adventuresome educators and watchers have openly begun to suggest that college may not be the best, the proper, the only place for every young person after the pletion of high school. We may have been looking at all those surveys and statistics upside down, it seems, and through the rosy glow of our own remembered college experiences. Perhaps college doesn't

make people intelligent, ambitious, happy, liberal, or quick to learn things—may it is just the other way around, and intelligent, ambitious, happy, liberal, quick-learning people are merely the ones who have been attracted to college in the first place. And perhaps all those successful college graduates would have been successful whether they had gone to college or not. This is heresy to those of us who have been brought up to believe that if a little schooling is good, more has to be much better. But contrary evidence is beginning to mount up.

60.According to the author, ___.

A.people used to question the value of college education.

B.people used to have full confidence in higher education.

C.all high school graduates went to college.

D.very few high school graduates chose to go to college.

61.In the 2nd paragraph, "those who don't fit the pattern" refer to___.

A.high school graduates who aren't suitable for college education.

B.college graduates who are selling shoes and driving taxis.

C.college students who aren't any better for their higher education.

D.high school graduates who failed to be admitted to college.

62.The dropout rate of college students seems to go up because___.

A.young people are disappointed with the conventional way of teaching at college.

B.many people are required to join the army.

C.young people have little motivation in pursuing a higher education.

D.young people don't like the intense petition for admission to graduate school.

63.According to the passage, the problems of college education partly originate in the fact that___.

A.society cannot provide enough jobs for properly trained graduates.

B.High school graduates do not fit the pattern of college education.

C.Too many students have to earn their own living.

D.College administrators encourage students to drop out.

64.In this passage the author argues that___.

A.more and more evidence shows college education may not be the best thing for high school graduates.

B.College education is not enough if one wants to be successful.

C.College education benefits only the intelligent, ambitious, and quick-learning people.

D.Intelligent people may learn quicker if they don't go to college.



Bugs Bunny's Hoping Carrot Hunt

In this game you are Bugs Bunny. and your goal is to reach the finish line. A carrot truck has spilled its cargo! Gather as many carrots as you can, and when you get the big carrot, you'll be able to jump even higher!

Instructions:Use the mouse to move Bugs left and right, and click to jump a gap while gathering carrots.

Category: Action

Mushroom Madness

You are in charge of protecting several farms. It's up to you to make sure the mushrooms there reach maturity before the animals in the forest get their hands on them. Use your swatter (苍蝇拍) to fight off anything that es near them; use heavier weapons if necessary. Instructions: Slap any creature that es near your mushrooms. Use the mouse to control the swatter. If you see a "power up", click to use it. Collect coins to buy upgrades after each level. Category: Action

Rudolph's Kick and Fly

Santa's little helpers have worked all year preparing for Christmas. When Santa finally leaves to deliver his presents, the elves (精灵) head down to the snowfields with Rudolph, the reindeer, to play their favorite game: Kick and Fly!


https://www.wendangku.net/doc/ef2611326.html,e the mouse to aim, and click to launch an fly.

2.While in the air, click again to catch, and to gain extra height.

3.The goal is to collect as many Christmas ornaments (装饰物) possible, and get 10 points for each one.

Tips: If you're heading towards an obstacle, be sure to avoid it!

Category: Action

Click Flick

Your mission is to save chicks falling from the sky. Use your trampoline (蹦床) to bounce them up and direct them into a nest. But hurry-if you don't, many chicks will fall and lose their lives. There will be falling bombs, worms, nuts and eggs and you can get extra points by collecting the worms and nuts. Save the amount of chicks shown to unlock the next level!

Instructions: Move the chicks left and right using keys or the mouse.

Category: Adventure

64. Which of the following statements about the games is TRUE according to the passage ?

A. Bugs Bunny needs to be fast to win the game

B. All four games are in the same category

C.Players can only use the mouse to control the targets

D.The number of elves decides whether a player wins

65. If a player has collected some worms and nuts, he _____.

A. is playing Mushroom Madness

B. will lose the game quite soon

C. will get 10 points for each one

D. will get extra points and get ahead

66. In which game are there obstacles you must avoid?

A. Bugs Bunny's Hopping Carrot Hunt.

B. Mushroom Madness.

C. Rudolph's Kick and Fly.

D. Click Flick.



ILLEGAL copying and sharing of copyrighted material is hard enough to stop within a country. But when the internet takes traffic across borders it is almost unmanageable. American-owned intellectual property, say, may be uploaded in one country and downloaded in a second, via a website whose puters are in a third, operated by anonymous enthusiasts (or criminals) from goodness-knows-where. So whom do you sue, and in which courts? The Stop Online Piracy Act (SOPA), now before America's Congress, is the latest of many recent attempts to defend property rights on the internet.

The bill aims to cut off Americans' access to foreign pirate websites by squeezing intermediaries. Rights-holders, such as Hollywood film studios, will be able to request that a credit-card firm or advertising network stop doing business with a foreign site; or ask a search engine to take down links to the site; or ask an internet-service provider to block the site's domain name, making it harder to reach. The intermediary then has just five days to ply or rebut the plaint; after that the rights-holder can go to court.

This would rope intermediaries into law enforcement to an unprecedented degree, and give rights-holders exceptional power. Critics of the bill say that takedown requests and court orders will swamp smaller firms and start-ups. They say that blocking entire websites via their domain name smacks of censorship, and that determined downloaders will anyway find the block easy to bypass.

Two mighty coalitions have formed around SOPA. Supporting the bill are not only film studios and music labels, but also drug firms and other manufacturers. Though SOPA itself does not affect them, they have a big interest in fighting any kind of intellectual-property infringement. On the other side are internet panies, technology investors and digital activists, who share an interest in disrupting business models and a dislike for anything that smacks of old-fashioned regulation.

But the real row is about how content should be distributed and paid for. The bill’s supporters want this to change as slowly as possible, so they have time to adapt. Opponents want see more rapid changes in business models to speed up overdue innovation: cheaper pricing in poor countries, more use of on-demand digital services, less exclusivity in distribution, and ultimately,

less reliance on selling albums and DVDS. Yet self-interest is at work on both sides: many of the bill’s critics are trying to create just these kinds of business.

67. Why is it hard to stop or manage online piracy?

A. There are not enough executive organizations.

B. The congress doesn’t pay attention to this problem.

C. It is difficult to identify the offenders

D. No court can deal with the cases.

68. We can infer from paragraph 2 that the bill_________.

A. Will prohibit advertising network from doing business with foreign sites

B. Is designed to make intermediaries unreadable by blocking their domain names.

C. Will require a search engine to cut off links to an intermediary

D Intends to fight against online intellectual property infringement.

69. Internet panies, technology investors and digital activists would most probably agree that .

A. People should oppose illegal copying and sharing of copyrighted material

B. People should change business patterns and discard those ancient rules

C. People should pay their attention to the bill and try their best to support it

D they may ignore the bill for it’s irrelevant to their interests and benefits

70. What does the writer think will happen to voice calls in the future?

A. They will only be used in emergencies.

B. they will continue to get more expensive.

C. They will only be used between family members.

D. They will be used mainly for intimate and detailed discussions.

71. Two kinds of perspectives toward the change are mentioned in order to_______?

A. Emphasize that one’s own benefit affects one’s attitude

B. Indicate that people always have different opinions

C. Provide the readers with more information about the two sides

D. Show the opportunity of fighting against online piracy.

Section C

Directions: Read the following passage and choose the most suitable sentence from A -AC for each blank. There are to extra sentences which you do not need.

As recently as 15 years ago, if you wanted to catch up on the news, you could look at a handful of publications or a few nightly programs. And if you wanted to listen to music, you could turn on MTV or fiddle with your radio. People in major cities had more options, because a large population can support specialty shops.______71________

Today, as we all know, access to information has exploded. One consequence, according to Toure, a culture critic writing in Salon, is that the ability of pop culture to unify us he refers to the massive interest in Michael Jackon’s Thriller, or Nirvana’s Nevermind-- has been eroded, probably forever. Steven Hyden, also writing in Salon,counters that whatever the advantages and disadvantages of a centralized pop-culture authority, the monoculture never actually existed.

_____72________ Even when it supposedly existed, its content largely depended on other characteristics of your little corner of the world. In the 1992-1993 school year, I was a student at a multiracial and relatively urban junior high school in California’s central valley. We listened to Salt-n-Pepa, Snoop Doggy Dogg, and Kris Kross, with the latter having inspired a trend in which kids wore their clothes backwards. The next year I was enrolled in a mostly white junior high school in leafy Chicago suburb. One of the houses was famous for having appeared in the 1990 film “Home Alone”; the popular bands were Nirvana, Hole and the Smashing Pumpkins; and the biggest pop-culture event of the school year was Kurt Cobain’s sui cide.

But Toure’s point is about the virtues of mon cultural experience. It seems he is recalling centralized media only in so far as it’s a distribution system that fostered that oute. _____73______. It doesn’t matter whether a record is released by an important label or an indie(独立制片人):if it’s online, people can usually find, forward, share and promote it. But what’s interesting and perhaps surprising, given that both Toure and Mr. Hyden seem to agree that the old distribution favored big media is that we still have widely shared cultural experiences. Just think of Barack Obama doing the little hand gesture from Beyonce’s “Single Ladies” video.

_______74______ It;s safe to say that the monoculture never really existed, and that some artists still reach a wide audience, whether we like it or not.

Section D

Directions: Read the passage and write a summary in no more than 60 words. Write your answer on the answer sheet.

Why do so many Americans distrust what they read in their newspapers? The American Society of Newspaper Editors is trying to answer this painful question. The organization is deep into a long self-analysis known as the journalism credibility project.

Sad to say, this project has turned out to be mostly low-level findings about factual errors and spelling and grammar mistakes, bined with lots of head-scratching puzzlement about what in the world those readers really want.

But the sources of distrust go way deeper. Most journalists learn to see the world through a set of standard templates (patterns) into which they plug each day's events. In other words, there is a conventional story line in the newsroom culture that provides a backbone and a ready-made narrative structure for otherwise confusing news.

There exists a social and cultural disconnect between journalists and their readers, which helps explain why the "standard templates" of the newsroom seem alien to many readers. In a recent survey, questionnaires were sent to reporters in five middle-sized cities around the country, plus one large metropolitan area. Then residents in these munities were phoned at random and asked the same questions.

Replies show that pared with other Americans, journalists are more likely to live in upscale neighborhoods, have maids, own Mercedeses, and trade stocks, and they're less likely to go to church, do volunteer work, or put down roots in a munity, Reporters tend to be part of a broadly defined social and cultural elite, so their work tends to reflect the conventional values of this elite. The astonishing distrust of the news media isn't rooted in inaccuracy or poor reportorial skills but in the daily clash of world views between reporters and their readers.

This is an explosive situation for any industry, particularly a declining one. Here is a troubled business that keeps hiring employees whose attitudes vastly annoy the customers. Then it sponsors lots of symposiums and a credibility project dedicated to wondering why customers are annoyed and fleeing in large numbers. But it never seems to get around to noticing the cultural and class biases that so many former buyers are plaining about. If it did, it would open up its diversity pro-gram, now focused narrowly on race and gender, and look for reporters who differ broadly by outlook, values, education, and class.


Directions: Translate the following sentences into English, using the words given in the brackets.











的K 2Cr 2O 7酸性水溶液遇乙醇迅速生成蓝绿色Cr 3+。下列对乙醇的描述与此测定原理有关的是( )。

①乙醇沸点低 ②乙醇密度比水小

③乙醇有还原性 ④乙醇是烃的含氧化合物





2、下列有关表达正确的是( )

A .硫离子的电子排布式:1s 22s 22p 63s 23p 4

B .H 2O 的电子式:

C .

D 2-乙基丙烷

3、下列物质的水溶液能导电,但属于非电解质的是( )


B . Cl 2

C . NH 4HCO 3

D . SO 2

4、人体正常的血红蛋白中含有亚铁离子,若误食亚硝酸盐NaNO 2,则导致血红蛋白中Fe 2+转化为Fe 3+,从而使血红蛋白中毒,服用维生素C 可解除亚硝酸盐中毒,则下列说法正确的是 ( )

A 维生素C 可将 Fe 2+还原成为Fe 3+ .B.亚硝酸盐被氧化


D. 维生素C 是氧化剂

5、下列有关铝及其合金的用途和其对应的性质叙述不正确的是( )

A .铝作电缆——铝的导电性 B.铝热反应——铝的导热性

C. 铝箔——铝的延展性




7、下列物质的熔沸点均是由高到低排列的是 ( )

(1)金刚石、晶体硅、碳化硅 (2)MgO 、MgCl2、NaCl 、CsCl

(3)金刚石、生铁、纯铁、钠 (4)Al 、Mg 、Na


A 、(2)(3)(4)(5)

B 、(3)(4)(5)

C (1)(3)(4)

D 、(2)(4)(5)

8、下列说法中正确是 ( )

A 、分子晶体中分子间作用力越大,其分子越稳定

↑ ↑ ↓ 1s ↑ ↓ 2s

2p ↑ ↑ H O H . . . . . . . .

B 、离子晶体发生状态变化时一定需要破坏离子键

C 、原子晶体中一定存在非极性共价键

D 、晶体中只要有阳离子就一定有阴离子


是 ( )

A .该有机物易溶于水

B .分子中含有四个六元环,其中有一个是苯环

C .1mol 分子水解后只能得到2mol 产物

D .1mol 分子最多能与7molH 2发生加成反应

10、将0.03molCl 2缓缓通入含有0.02molH 2SO 3和0.02molHBr 的混合液中,则溶液中H +的浓度与通入的氯气的物质的量的关系是下列图中的(纵坐标都表示氢离子的物质的量浓度


11、某溶液中可能含有Na 、Fe 、Br 、CO 、I 、SO 六种离子中的几种。(1)取该溶液少量滴加足量氯水后,有气泡产生、溶液呈橙黄色;(2)向呈橙黄色的溶液中加入氯化钡溶液无沉淀生成;


A.Na 、Br 、CO

B.Na 、I 、SO

C. Fe 2、I 、SO

D. Fe 、Br 、CO

12、N A 表示阿佛加德罗常数,下列叙述中指定粒子数目一定大于N A 的是 ( )

A .11.5L N 2和NO 的混合气体所含的原子数

B .12g 14

C 中所含的碳原子数

C .28g 铁在反应中作还原剂时,失去电子的数目

D .1 L 0.1 mol·L -1 CH 3COOH 溶液中所含的分子总数

13、将3.9 g 镁铝合金,投入到500 mL2 mol/L 的盐酸中,金属完全溶解,再加入4 mol/L 的NaOH 溶液,若要生成的沉淀最多,加入的这种NaOH 溶液的体积是 ( )

A .125 mL

B .200 mL

C .250 mL

D .560 mL

14、下列装置或操作能达到实验目的的是( )



,当反应进行到4min时,测得此时SO2为0.4mol,若反应进行到2 min时,密闭容器中SO2的物质的量是()

A.1.6mol B1.2 mol C.> 1.6 mol D. <1.2 mol







A 1:7

B 1:9

C 1:5

D 2:9








20、ClO2是一种广谱型的消毒剂,根据世界环保联盟的要求ClO2将逐渐取代Cl2成为生产自来水的消毒剂。工业上ClO2常用NaClO3和Na2SO3溶液混合并加H2SO4酸化后反应制得,在以上反应中NaClO3和Na2SO3的物质的量之比为( )

A 1:1

B 2:1

C 1:2

D 2:3




C.合成氨工业中,利用氨易液化,分离出N2 、H2 循环使用,总体上提高了氨的产率




A.30 B.42 C.45 D.60




(1) B元素原子的最外层轨道表示式是_______________________ ,D离子的核外电子排布式



(3) D单质在B单质中燃烧的化学方程式为_________________________________________。

(4)A和D两元素金属性较强的是(用元素符号表示) ________。写出能证明该结论的一






若反应中转移15 mol电子,则氧化产物的质量为。



















(5)在测定所得胆矾(CuSO 4·xH 2O )中结晶水x 值的实验过程中:称量操作至少进行__ 次

若测定结果x 值偏大,可能的原因是_______________。

a 加热温度过高

b 胆矾晶体的颗粒较大

c 加热后放在空气中冷却

d 加热胆矾晶体时有晶体从坩埚中溅出

(6)样品中CuO 的质量分数为______________________(用含m 的代数式表示)。

26、(12)下表是四种盐在不同温度下的溶解度(g/100g 水):



(1)在①和②的实验过程中,需要控制的关键的实验条件是______________________, 在上述晶体中,______(填“A ”或“C ”)应为硝酸钾晶体。

(2)在①的实验过程中,需要进行的操作依次是________________、________________、_______________。 (3)粗产品中可能含有杂质离子_______________________,检验其中一种离子的方法是________________________________________________________________________。


a .热水

b .冰水

c .95%的酒精

d .四氯化碳

(5)如取34.0g 硝酸钠和29.8g 氯化钾,加入70g 水,在100℃蒸发掉50g 水,维持该温度,过滤,析出晶体的质量为_______________。


27、(8)已知CH 2



CH 2可简写为。现有某化合物W 的分子结构可表示为:。

(1)W 的分子式为 ;(2)W 的一氯代物有 种。

(3)下列有关W 的说法不正确的是 (填编号);

a.能发生还原反应 b .能发生氧化反应 c .能发生加聚反应

d .等质量的W 与苯分别完全燃烧所消耗的氧气量,前者大

(4)写出W 的芳香族同分异构体(能发生聚合反应)的结构简式 ,该聚合反应





O三种元素,其原子个数比为2:4:1 ,乙偶姻中含有碳氧双键。与乙偶姻有关的反应如下:



(2)X是乙偶姻的同分异构体,属于酯类,写出其所有可能结构简式_______ _。

(3)写出反应①、③的反应类型:① ___________、③ ___________。


A ___________________、乙偶姻 __________________、C_________________。

(5)写出D → E反应的化学方程式_______________________________________________。






(1)甲厂的尾气中含SO2 0.2%、O2 10.0%(体积分数,其余为N2)。该尾气对氢气的相对密度为_______________(保留3位小数)。若该厂每天排放的尾气为2×105 m3(标况下),则该厂每天最多能获得______________吨硫酸铵。(保留2位小数)